Who could have replaced Douglas Haig on the Western Front?
Short answerPlumer was probably the best field choice, with Rawlinson another option, though replacing Haig would also open gaps lower in the command structure.
NotesHerbert Plumer is presented as the strongest field replacement for Haig because he combined seniority with direct understanding of the Western Front. Henry Rawlinson is the other leading commander already serving below Haig. Promoting either man would create another vacancy in the command chain, so replacement could not be reduced to changing one name at the top. Officers serving in other theaters might be capable, but bringing them up to speed on the Western Front would consume time during an active war.