Simplify the following text for a Grade 10 native English-speaking person.
Original: Depending on the nation , military branch , mission , and organization , a modern combat regiment resembles a brigade , in that both range in size from a few hundred to 5,000 soldiers ( three to seven standard battalions ) .
Simplified: A modern regiment can also be similar to a brigade , in that both can be from a few hundred soldiers to 5,000 soldiers ( from 3 to 7 battalions ) .