The Yugoslav Navy, was the navy of Yugoslavia from 1945 to 1992. It was essentially a coastal defense force with the mission of preventing enemy landings along Yugoslavia's rugged 4,000-kilometer shoreline or coastal islands, and contesting an enemy blockade or control of the strategic Strait of Otranto.
The Navy of the Independent State of Croatia, was the navy of the Independent State of Croatia, an Axis puppet state controlled by the fascist Ustaše party. The NDH was created from parts of the Kingdom of Yugoslavia on 10 April 1941, four days after the World War II invasion of Yugoslavia by the Axis powers commenced. The RMNDH consisted of two commands, the Coast and Maritime Traffic Command, and the River and River Traffic Command, and had its headquarters in the NDH capital, Zagreb. The Coast and Maritime Traffic Command consisted of three naval commands along the Adriatic coast, which were each divided into a number of naval districts. The naval districts consisted mainly of naval and weather stations, and were only responsible for coast guard and customs duties. The River and River Traffic Command consisted of seven river stations, a naval infantry battalion, and a River Command Flotilla built around two former Yugoslav river monitors, which had been scuttled during the invasion but subsequently refloated.
Vorpostenboot, also referred to as VP-Boats, flakships or outpost boats, were German patrol boats which served during both World Wars. They were used around coastal areas and in coastal operations, and were tasked with – among other things – coastal patrol, ship escort, and naval combat.
The Black Sea Campaigns were the operations of the Axis and Soviet naval forces in the Black Sea and its coastal regions during World War II between 1941 and 1944, including in support of the land forces.
The Croatian Air Force Legion, or HZL, was a unit of the Luftwaffe, composed entirely of volunteers drawn from the nazi puppet-state, the Independent State of Croatia. Many of them had previously served in the Royal Yugoslav Air Force in April 1941 during the Nazi Invasion of Yugoslavia.
The Royal Navy, commonly the Royal Yugoslav Navy, was the naval warfare service branch of the Kingdom of Yugoslavia. It was brought into existence in 1921, and initially consisted of a few former Austro-Hungarian Navy vessels surrendered at the conclusion of World War I and transferred to the new nation state under the terms of the Treaty of Saint-Germain-en-Laye. The only modern sea-going warships transferred to the new state were twelve steam-powered torpedo boats, although it did receive four capable river monitors for use on the Danube and other large rivers. Significant new acquisitions began in 1926 with a former German light cruiser, followed by the commissioning of two motor torpedo boats (MTBs) and a small submarine flotilla over the next few years. When the name of the state was changed to Yugoslavia in 1929, the name of its navy was changed to reflect this. In the late 1920s, several of the original vessels were discarded.
30th U-boat Flotilla of Nazi Germany's Kriegsmarine was formed in October 1942. Six U-boats reached the Black Sea after a transport over land and canals and operated from the harbours of Constanţa and Feodosiya from 1942 to 1944.
Edgar Angeli was a Croatian rear admiral who served as the commander of the Navy of the Independent State of Croatia between 1943 and 1944.
The Azov Flotilla or Azov Naval Flotilla was the name given to several Russian naval forces operated on the Sea of Azov as part of the Imperial Russian Navy, by both the Soviets and the White Russians during the Russian Civil War, and as part of the Soviet Navy during World War II.
The action of 13 May 1942 was a naval engagement during World War II between the British Royal Navy and the German Kriegsmarine. It was an attempt by Royal Navy Motor Torpedo Boats (MTBs) to stop the German auxiliary cruiser Stier from reaching Gironde, France. Stier made it through the English Channel and reached Gironde, but MTBs sunk the German fleet torpedo boats Iltis and Seeadler. MTB 220 was sunk by the German ships.
The action of 1 November 1944, also known as the Ambush off Pag Island, was a naval engagement in the Kvarner Gulf of the Adriatic Sea, between the islands of Pag and Lussino on 1 November 1944. It was fought between a British Royal Navy destroyer flotilla and a Kriegsmarine force of two corvettes and a destroyer. The German flotilla was deployed to escort a convoy retreating from Šibenik to Fiume. The British managed to destroy all three German ships in return for no loss.
HMS Aldenham was an escort destroyer of the Type III Hunt class. The Royal Navy ordered its construction in July 1940. Upon completion in February 1942, she was deployed to convoy escort duty. Aldenham is one of the ships credited with the sinking of the U-587 on 27 March 1942. After circumnavigating Africa, she joined the Mediterranean Fleet, escorting convoys between Alexandria, Malta and Tobruk. She took part in the Allied invasion of Sicily, landings at Salerno and Anzio, the Dodecanese campaign and Operation Dragoon before being assigned to the Adriatic campaign.
T1 was a seagoing torpedo boat that was operated by the Royal Yugoslav Navy between 1921 and 1941. Originally 76 T, a 250t-class torpedo boat of the Austro-Hungarian Navy built in 1914, she was armed with two 66 mm (2.6 in) guns and four 450 mm (17.7 in) torpedo tubes, and could carry 10–12 naval mines. She saw active service during World War I, performing convoy, escort and minesweeping tasks, anti-submarine operations and shore bombardment missions. In 1917 the suffixes of all Austro-Hungarian torpedo boats were removed, and thereafter she was referred to as 76. She was part of the escort force for the Austro-Hungarian dreadnought Szent István during the action that resulted in the sinking of that ship by Italian torpedo boats in June 1918. Following Austria-Hungary's defeat later that year, she was allocated to the Navy of the Kingdom of Serbs, Croats and Slovenes, which became the Royal Yugoslav Navy, and was renamed T1. At the time, she and seven other 250t-class boats were the only modern sea-going vessels of the fledgling maritime force.
The Schichau class consisted of 22 torpedo boats built for the Austro-Hungarian Navy between 1885 and 1891. The class was one of the first torpedo boat classes built for the Austro-Hungarian Navy, and they were initially powered by steam from a single locomotive boiler and were armed with two 37 mm (1.5 in) Hotchkiss guns and two 356 mm (14 in) torpedo tubes. The entire class was reconstructed between 1900 and 1910, when they received two Yarrow boilers and a second funnel.
Naval regions and districts were the official shore establishment of Nazi Germany's Kriegsmarine during World War II. The Kriegsmarine shore establishment was divided into four senior regional commands, who were in turn subordinated to the operational Navy Group commanders who commanded all sea and shore naval forces within a particular geographical region. Within each naval region were several subordinate naval districts who were responsible for all navy shore activities within their area of responsibility, most significantly were the various German ports of occupied Europe.
Surface flotillas of the Kriegsmarine were organizational groupings of German naval vessels during World War II based on class of vessel and geographical location. Surface flotillas were not operationally deployed units, but functioned through the administrative command chain of the Kriegsmarine.
The Ranks of the Independent State of Croatia Armed Forces are the ranks used by the Independent State of Croatia, it had similar insignia to those of the Armed Forces of Nazi Germany.
The Croatian Anti-Aircraft Legion was an anti-aircraft (Flak) unit in the service of the German Air Force (Luftwaffe) during World War Two. It was composed of Croat volunteers from the Independent State of Croatia (NDH).
The German-Croatian Police, also known as the German-Croatian SS Police and Gendarmerie, was a force established by the SS for internal security operations in the Independent State of Croatia. In all, 32,000 Croats served in the various units of this Police force, under German command, with the task of preserving order and help defend Axis strategic positions throughout the country.
The Quarta Flottiglia MAS was an Italian flotilla of the Regia Marina created during the Fascist regime.
Independent State of Croatia 
Germany