Major general is a military rank used in many countries. It is derived from the older rank of sergeant major general.
In English-speaking countries, when appointed to a field command, a major general is typically in command of a division consisting of around 6,000 to 25,000 troops (several regiments or brigades). It is a rank that is subordinate to the rank of lieutenant general and senior to the rank of brigadier or brigadier general. In the Commonwealth, major general is equivalent to the navy rank of rear admiral. In air forces with a separate rank structure (Commonwealth), major general is equivalent to air vice-marshal.
