of May 29, the Confederate army moved out. They used the Mobile and Ohio Railroad to carry the sick and wounded, the heavy artillery, and tons of supplies. When a train arrived, the troops cheered as though reinforcements were arriving. They set up dummy Quaker guns along the defensive earthworks. Camp fires were kept burning, and buglers and drummers played. The rest of the men slipped away undetected..." Quaker guns were also used to bolster Confederate fortifications during the Siege of Petersburg. They assisted in prolonging the Confederates' hold on their positions against the overwhelmingly superior numbers of Union troops. Use during World War I The widespread adoption of aerial reconnaissance in World War I led both sides to experiment with both deception operations and aerial camouflage. Use during World War II A similar idea was employed during the Doolittle Raid, which occurred in the early stages of the Pacific War of World War II, where Lieutenant Colonel Jimmy Doolittle led a squadron of B-25 Mitchells to bomb Tokyo. The early model B-25B lacked any protective guns installed in the tail section, leaving them vulnerable to attacks from the rear. While modifying the bombers for the mission at Eglin Field, Florida, Doolittle had fake machine guns consisting of a pair of broomsticks painted black mounted at the tail end of the fuselage to simulate tail guns. Similarly, while preparing for the coming invasion of France, the German forces on Pointe du Hoc moved their artillery battery and replaced it with upturned logs and barrels to spoof the photo-reconnaissance and fool the invading Allied forces. Dummy equipment was also used extensively by the Allies in Operation Fortitude, to persuade the Germans that a non-existent field army was preparing to attack Calais. The pre–World War I British battleship HMS Centurion was obsolete and disarmed by World War II. However, from 1942 to 1944, she was fitted with wooden guns and stationed in the eastern Mediterranean, to make British naval forces in the area seem stronger than they were. Fake gun emplacements, quickly constructed from local timber, were widely employed in the Soviet Union to fool and mislead German air reconnaissance. Wooden cannon Unlike a Quaker gun, a wooden cannon is a functional weapon, albeit notoriously weak and only able to fire a few shots, sometimes even just one shot, before bursting. These were used by those without access to metal or the