The breed selection of military and police dogs usually depends on a variety of factors, including work requirements, adaptability, training ability, etc. Here are some common breeds used for military and police dogs:

German Shepherd: German Shepherd Known for their intelligence, bravery, loyalty and high trainability, they are often used in military and police work such as patrolling, searching, guarding, etc.

Belgian Malinois: The Malinois has excellent agility, strength and endurance, and is suitable for high-intensity work, such as counter-terrorism, anti-narcotics, etc.

Rottweiler (Rottweiler): The Rottweiler is strong, brave, and has strong guarding capabilities. It is often used for patrol, security and protection tasks.

Labrador Retriever: Labrador Retriever is gentle, friendly and has an excellent sense of smell. It is often used for search and rescue, explosive detection and other work.