ADJ
- eastern, western, etc.
- Thousands were killed on the eastern front
VERB + FRONT
- send sb to
- Even young teenagers were sent to the front
PREP
- at the ~
- A new battalion arrived at the front
- on the~
- They had to fight on two fronts
VERB + FRONT
- put on
- She put on a brave front, but I knew how miserable she was
PREP
- ~ for
- Her aggressive behaviour is just a front for her shyness
PHRASES
- present a united front
- However much the directors disagree with each other, they always present a united front to the world