Emmerson Model 136 jowl barbettes

1475 × 929

Sailor manning aircraft gun

6516 × 8448

Soldiers with Machine Gun — Black

1350 × 902

U.S. Navy recruitment poster

1029 × 1493

Soldier on rail-mounted gun

1461 × 700

U.S. Navy Biplane

900 × 645

U.S. Navy biplane on carrier deck

1472 × 1010

Naval Aircraft in Flight — Dark Blue

1280 × 1024

Machine Gun with Equipment

3138 × 1548

Soldier with Machine Gun — Gray, Alert

2445 × 1800

WWII German motorcycle and machine gun

1680 × 1050

Maxim machine gun display

1800 × 1528