During both world wars and a period after the second, military service was mandatory for at least some of the British population.

The class will be mandatory for all students beginning in the fall of 1993.

In general, it is mandatory for all freshman to take at least one or two terms.

This system became mandatory for public use with a law passed in 2009.

They had been mandatory for all players who entered the league after 1979.

The final year includes one foreign language, which is mandatory for every student to go through.

All the four rituals are mandatory for the first child.

Nine years of education is mandatory for all children beginning at age six.

At first, this test was mandatory for medical devices only.

A guide is mandatory for every up to 10 people.