We know that there were more trumpets than horns. Quite likely each maniple had its trumpeter, and each cohort its buccinator.
THE BAGGAGE TRAIN.
§ 15. The heavy baggage of the legion (impedimenta) was carried by pack-animals (jumenta, jumenta sarcinaria), either horses or mules. Wagons or carts, while occasionally used by the army, were generally found only with the sutlers (mercatores) who followed the legions. The personal baggage (sarcinae) was carried by the soldiers (§§ 45-48).
C. I, 81. B. G. V, I2.
§ 16. Rüstow has made elaborate calculations of the quantity of baggage a legion must have had. We follow his estimates in the main, making such adaptations as may be warranted by deviation from his figures for the size of the legion.
R. pp. 16-19.
We may reckon the load of one pack-animal at 200 lbs. The first thing would be the tents (tentoria, tabernacula). These as described by Hyginus were on a square base, 10 feet on a side, with a wedge roof. Ten men could use such a tent. Hyginus estimates 8 men in a tent. Yet he allows one to every 10 men, as one-fifth of each contubernium should always be on guard duty; and hence of the 10 belonging to any one tent, only 8 would ever occupy it at the same time. It seems safe to consider that the corrtubernium, a group of soldiers messing together in a tent, was 10 in number also in Cæsar's army. Then, each centurion had one tent. So a maniple would need 14 tents for the centurions and a strength of 120 men. Allowing two for the servants, the entire number would be 16. That would make 48 for a cohort, and 480 for a legion. To this number must be added those needed by the six tribunes and their servants, or perhaps 12 more. If tents are allowed also for subcenturions, perhaps we should estimate 60 or 30 more,