The B-24's spacious, slab-sided fuselage (which earned the aircraft the nickname "Flying Boxcar") was built around two central bomb bays that could accommodate up to 8,000 pounds (3,600 kg) of ordnance in each compartment (but rarely did, as this decreased range and altitude).
The B-24 was used extensively in World War II. It served in every branch of the American armed forces, as well as several Allied air forces and navies, and saw use in every theater of operations. Along with the B-17, the B-24 was the mainstay of the US strategic bombing campaign in theWestern European theater. Due to its range, it proved useful in bombing operations in thePacific, including the bombing ofJapan. Long range anti-submarine Liberators played an instrumental role in closing theMid-Atlantic Gap in theBattle of the Atlantic. The C-87 transport derivative served as a longer range, higher capacity counterpart to theDouglas C-47 Skytrain.