(S (S (NP (NP (NP (BASENP (NNP Lieutenant) (NNP Colonel) (NNP Rupert) (NNP Thorneloe)) (COMMA ,) (BASENP (NN 40))) (COMMA ,) (NP (BASENP (JJ Commanding) (NNP Officer)) (PP (IN of) (BASENP (DT the) (JJ 1st) (NN Battalion) (JJ Welsh) (NNPS Guards))))) (CONJP (COMMA ,) (CC and)) (NP (NP (BASENP (NNP Trooper) (NNP Joshua) (NNP Hammond)) (PRN (COMMA ,) (BASENP (NN 18)) (COMMA ,))) (PP (IN of) (BASENP (DT the) (JJ 2nd) (NNP Royal) (NNP Tank) (NNP Regiment))))) (COMMA ,) (VP (VBD were) (VP (VBN killed) (SBAR (WHADVP (WRB when)) (S (BASENP (DT an) (JJ improvised) (JJ explosive) (NN device)) (VP (VBD was) (VP (VBN detonated) (PP (IN under) (BASENP (PRPD their) (JJ Viking) (JJ armored) (NN vehicle)))))))))) (PERIOD .))