USS Delaware battleship

5281 × 2897

Soldiers on a tank with an airship

998 × 795

Battleship Oslaby in port

1024 × 1280

World War I Biplane — Brown

1280 × 800

Diagram of UC-5 submarine

1680 × 1050

German WWI biplanes on airfield

1098 × 720

Albatros D.V aircraft profiles

1313 × 1871

Soldiers in gas masks on a dirt road

2800 × 2199

Mort-Homme Ridge After Battle

1021 × 729

Pilot and officer by biplane

2800 × 2050

1st Field Artillery Brigade formation

881 × 658

Early tank on display

1335 × 750