The past participle is battled. This is also the case for the simple past tense.
The past participle is withstood.
It is "attacked"
marched
The simple past tense (and also the past participle) is attacked.
The past tense is battled.
The past participle of "do" is "done." The past participle of "have" is "had."
The past participle of "am not" is "have not been."
The past participle of the word "have" is "had."
The past participle of "will" is "willed."
The past participle of "am, are, is" is "been."
The past participle of "to" is "been." The past participle of "be" is also "been."
The past tense and the past participle is "answered".
The past tense of "have" is "had," and the past participle is also "had."
The past and past participle for "buy" is "bought."
"Sold" does not have any past participle; it is the past participle of "sell".
The past participle of "was" is "been" and the past participle of "were" is also "been".
Being is the present participle. The past participle is been.