Mezue ahịrịokwu a:
Agha nke Marengo na 1800, nkewa Jean Boudet nwere ihe anọ 8-pounders na anọ 4-pounders ndị mmadụ nke 3rd na 4th Companies nke 2nd Horse Artillery Regiment. Ngalaba nke Jean-Charles Monnier nwere otu 8-pounder na otu howitzer nke ụlọ ọrụ nke 5 nke 1st Artillery Regiment na abụọ ejidere 3-pounders nke ụlọ ọrụ nke 10 nke 6th Artillery Regiment. Ndị na-eche nche n'ụlọ ọrụ ndị nnọchianya nwere egbe egbe abụọ dị kilogram asatọ na otu egbe egbe.