However, before battle was joined the heavy units of the fleet would, if possible, deploy into a single column. To form the battle line in the correct orientation relative to the enemy, the commanding admiral had to know the enemy fleet's distance, bearing, heading, and speed. It was the task of the scouting forces, consisting primarily of battlecruisers and cruisers, to find the enemy and report this information in sufficient time, and, if possible, to deny the enemy's scouting forces the opportunity of obtaining the equivalent information.