who willingly walk into the nightmare of war not only to record the events for posterity , but to help us 
(ROOT (SBAR (WHNP (WP who)) (S (ADVP (RB willingly)) (VP (VP (VBP walk) (PP (IN into) (NP (NP (DT the) (NN nightmare)) (PP (IN of) (NP (NN war))))) (S (CONJP (RB not) (RB only)) (VP (TO to) (VP (VB record) (NP (DT the) (NNS events)) (PP (IN for) (NP (NN posterity))))))) (, ,) (CC but) (VP (TO to) (VP (VB help) (NP (PRP us))))))))
(ROOT (SBAR (WHNP (WP )) (S (ADVP (RB )) (VP (VP (VBP ) (PP (IN ) (NP (NP (DT ) (NN )) (PP (IN ) (NP (NN ))))) (S (CONJP (RB ) (RB )) (VP (TO ) (VP (VB ) (NP (DT ) (NNS )) (PP (IN ) (NP (NN ))))))) (, ) (CC ) (VP (TO ) (VP (VB ) (NP (PRP ))))))))