Mezue ahịrịokwu na-esonụ: Mgbe Agha Crimea malitere, e kenyere Chapman na Ngalaba nke 1, nke Prince George, Duke nke Cambridge, nyere iwu, dị ka onye isi injinia. O sonyere na
Agha nke Alma ma kpọtụrụ ya aha na ozi nke 28 Septemba 1854, na-eduzi ọrụ injinịa n'oge nnọchibido nke Sevastopol. Ọ nọ n'agha nke Inkerman ma kpọtụrụ ya aha na nzipu ozi na 11 Nọvemba 1854, 23 June 1855 na 9 Septemba 1855. Na 5 Julaị 1855 e mere ya ka ọ bụrụ Companion nke Order nke Bath ma nata nsọpụrụ site n'aka ọtụtụ gọọmentị mba ọzọ, gụnyere ịbụ onye isi nke atọ nke Order nke Medjidie. Gọọmentị Britain nyere ya ụgwọ ezumike nka maka ọrụ ya pụtara ìhè na 23 Nọvemba 1858. N'abalị asatọ n'ọnwa Eprel n'afọ 1856, a họpụtara Chapman ka ọ bụrụ Chief Royal Engineer na London District, tupu ebufe ya na Aldershot na Septemba n'afọ 1857. N'abalị mbụ nke ọnwa Eprel afọ 1859, e buliri ya n'ọkwa lieutenant-colonel. Site na 1 Septemba 1860 ọ rụrụ ọrụ dịka osote onye isi ndị injinia Royal na Horse Guards ruo afọ ise. Emere ya Knight Commander nke Order of the Bath na 13 Machị 1867 na 8 Eprel a họpụtara ya gọvanọ na ọchịagha nke Bermuda. Na 1 Julaị 1870 ọ gbara arụkwaghịm n'ọkwa a ma nakwere nhọpụta nke General Inspector of Fortifications na Director of Works na War Office.