https://www.englishhints.com/war-vocabulary.html
https://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-114186.php
http://www.englishvocabularyexercises.com/eve-exercises/EngVocEx_war_conflict_4-1.htm
http://www.englishvocabularyexercises.com/eve-exercises/EngVocEx_war_conflict_1-5.htm
http://www.englishvocabularyexercises.com/general-vocabulary/