The verified answer to “Important Battles question: Which Company detachment held its position at Koregaon on 1 January 1818?” is A mixed detachment under Captain F. The source-backed, question-specific record explains: Captain Staunton’s Company detachment included infantry, cavalry and artillery and fought Peshwa forces at Koregaon. Asking about the documented mixed detachment avoids presenting “500 Company soldiers, mainly Mahars” as the entire force. This evidence establishes the historical relationship required in this Important Battles item. Option A gives A mixed detachment under Captain F. Staunton and satisfies every condition stated in the question. The remaining choices—A naval squadron under Clive, A force commanded by Tipu Sultan and The army of Ranjit Singh—do not satisfy the complete requirement. The reliable checking method is to identify the named battle first, recall or verify its verified participant or outcome, and then read qualifiers such as “both works,” “original language,” “first published,” “correctly matched” or “incorrectly matched.” These qualifiers determine what counts as the answer. Replaying that method for this Important Battles question confirms A mixed detachment under Captain F. Staunton without relying on option position.