This attitude is common to most young men in the armed services
PHRASES
have sth in common
Jane and I have nothing in common (= share no interests, ideas, etc.) . I have nothing in common with Jane. The two cultures have a lot in common (= have the same features, characteristics, etc.)
hold sth in common
They hold the property as tenants in common (= they share it)
in common with
Britain, in common with (= like) many other industrialized countries, has experienced major changes over the last 100 years