Original sentence: Though Smith did cross the Rio Grande, he learned on his arrival that Buckner had traveled to New Orleans on May 26, 1865 and arranged terms of surrender; being, ironically enough, both the first Confederate general to surrender an army and the last
Edited sentence: Though Smith did cross the Rio Grande, he learned on his arrival that Buckner had traveled to New Orleans on May 26, 1865 and arranged terms of surrender; being, ironically enough, both the first Confederate general to surrender an army and the last, an action Smith endorsed on June 2