"Member of a British tank regiment makes double "victory" signs from his Valentine infantry tank, Britain, 1940."
They had one, a Dutch boat signed over to Australia, but is was mechanically unreliable, so was only used for ASW training.
"Italian Fiat BR.20 Cicogna bombers during a mission against England, Battle of Britain, circa November 1940"
F6F-3 Hellcat of VF-15 being shot from the hanger deck of the fleet carrier USS Hornet during training in the Chesapeake Bay, February 12, 1944. (I was not aware that this was possible)
"Rare color pic of German Marder III H tank destroyers in Tunisia. Probably newly arrived and prepared to be sent to the front packed with gasoline drums and jerrycans."
They took a launcher from a BB or CA and mounted it in the hangar bay for testing. It wasn't an ongoing thing.
"[1345x897] The armoured cruiser Marseillaise; in August 1914, at the outbreak of World War I, she was flagship of the 2ème Escadre Légère, in the English Channel."
Hangar deck catapults were a standard feature of Yorktown, Wasp, and early Essex class carriers. They were not often used operationally and were eventually removed. Carrier catapults including hangar deck units were hydraulic. Battleships and cruisers used black powder catapults since pivoting or turret-top cats could not accommodate hydraulic lines.
Some cool die cast models on my mantle. Since die cast, would not fall under “modeling” ..............