Hi there! Be sure to put this into your own words.
First, we will start with the sentence.
"They valiantly swooped down into the battleground, not knowing what will await them"
Judging by this, what do you think "valiantly" means? It would mean bravery. A warrior fights with valiant. Different words for valiantly include bravery, heroism, and courageous.
Remember if you're unsure on a word, if they have an example, use context clues to identify the meaning of the word.
Have a great day!