Putting the ‘Fortress’ into the B-17: A Look at the Guns
It is no understatement to say that the B-17 bomber is one of the most famous airplanes to fly a mission. Today we look at the hardware that lived up to its well-deserved “Flying Fortress” name.
When it first flew in 1935, the original B-17 wasn’t very well equipped with defensive gun armament; after all, its main armament was its massive 5,000-pound bomb load.

The YB-17 prototypes had a single gun up front, two in side nacelles, one for the radio operator, and one below – just five all told, all with limited fields of fire. (National Museum of the Air Force)
Wartime experience soon changed this, and by the time the B-17G model took to the air, it carried 13 .50-caliber air-cooled machine guns and almost 7,500 rounds of ammunition to keep them firing. While a few of the bomber’s crew were dedicated gunners, everyone save for the pilot and co-pilot had a gun at their disposal and were expected to use it if needed.

B-17G Flying Fortresses Drop Bombs On Berlin, Germany 26 February 1945. [91St Bg] 59348AC 342-FH_000123
For a closer look, head over to my piece at Guns.com that includes a walk around we did out at Pima.








