A military coalition is an alliance of different countries or groups that come together to achieve a common military goal. These coalitions can be formed for various reasons, such as responding to a conflict, addressing security threats, or conducting joint operations. Members of a coalition often share resources, intelligence, and troops to enhance their collective strength. Coalitions can vary in size and scope, ranging from small groups of nations to large international organizations like the North Atlantic Treaty Organization (NATO). They play a crucial role in modern warfare, allowing countries to collaborate and coordinate their efforts in complex global situations.