let's start by saying i have mood music for playing wargames and building models (3D, wooden, and plastic). so here goes.
all types
anything by rimsky-korsakov; russian symphonies; magnificent seven; conan the [fill in the blank]; apollo (brian eno)
ships
movie scores: master and commander; victory at sea vols 1and2; tall ships suite; pirates of the caribbean; sea sounds; tora,tora, tora; sea power (pbs); ghosts of the abyss; the abyss; das boot
armor
movie scores: patton; bridge to far; longest day (compilation of movie title pieces); war (compilation of movie title pieces); the graet escape; band of brothers
air
movie scores: battle of britain; blue max; babylon 5;
when i used to play board wargames face to face not only would we tailor the music to the era (1812 overture, gettysburg, civil war music) we would drink appropriately beer or wine for germans, wine for french, vodka for russians, rum or gin for british, whiskey for americans and civil war). ok i'm a bit wierd but at 55 i can be.