close-order drill: (military) military drill of troops in standard marching (shoulder-to-shoulder)
military drill: training in marching and the use of weapons
jerusalem thorn: large shrub or shrubby tree having sharp spines and pinnate leaves with small deciduous leaflets and sweet-scented racemose yellow-orange flowers; grown as ornamentals or hedging or emergency food for livestock; tropical America but naturalized in southern United States