攻撃 is an attack. Make that into a verb and you have to attack.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well. It will help to know 攻撃 as well.
"Koichi! There’s a pride of raging lions charging toward our town! They are going to attack us very soon. What do we do?" "Don’t worry. Leave it to me."