The Rats of Tobruk refers to the Australian and Allied soldiers who defended the Libyan port city of Tobruk during World War II from April to December 1941. They faced a prolonged siege by Axis forces, primarily German and Italian troops, and became known for their resilience and determination in harsh conditions. The term "Rats" was initially used derogatorily by the enemy but was embraced by the defenders as a badge of honor. The successful defense of Tobruk played a crucial role in delaying Axis advances in North Africa and bolstered Allied morale during a challenging period of the war.