HMS Vernon sailor holds ship's mascot in Portsmouth in September 1931.
A cat balances on shoulder of Royal Air Force pilot circa 1944.
Marine Cpl. Edward Burckhardt finds a new friend in Iwo Jima, Japan, in Feb 1945.
Seaman plays cards with his ship's pets, Joey the hamster and Smew the kitten, on the HMS Torquay in 1956.
A US Marine feeds a kitten after a heavy mortar barrage near Bunker Hill during the Korean War.
A US Marine comforts a stray cat during the battle in Khafji, Saudi Arabia in 1991 during the first ground battle of the Gulf war.
Egyptian in the UN protection force in Bosnia feeds yogurt to an abandoned cat in 1992.
A kitten adopts the trouser pocket of a US Army soldier in the Philippines in June 2012.
A sapper carries a cat to safety before detonating the remains of a mortar shell in Semenovka, Ukraine, in 2014.
