Complex sentence: Between successes of Crimean War, one Anglo-French naval force realizing some naval bombardment againstPetropavlovsk, Kamchatka, also this group occupied Uruppu (denomined for theirs "Ile d Alliance") and Etorofu ("Ile d Las Nations") for certain period.
Split into simpler sentences: Between successes of Crimean War, one Anglo-French naval force made a naval bombardment against Petropavlovsk, Kamchatka. This group occupied Uruppu (denomined for theirs "Ile d Alliance") and Etorofu ("Ile d Las Nations") for certain period.