Correct

夜战

/ yè zhàn / 
Strokes

Example

As a Verb

fight at night

1
Shàncháng
擅长
yèzhàn
夜战

be good at night fighting

As a Verb

work at night

2
Tiǎodēng
挑灯
yèzhàn
夜战

continue working by lamplight