=5. Military Vocabulary and Study of Ground.=--This instruction can be carried out on the Target with scenery and figures, including those which represent troops in different formations, artillery, transport, etc., and also on Landscapes according to the rules laid down in Sec. 35, paras. 3 to 6 inclusive. =6. Range-Cards and Range-Marks= (Sec. 40).--The Target with scenery and also Landscapes may be used for lectures on the choice of features of ground for taking ranges, and for the preparation of range-cards and range-marks in attack and defence. =7. Observation of Fire.=--Observation of fire can be practised on miniature ranges as described in Sec. 73, para 4. =8. Fire Direction and Control.=--(i) =Lectures.=--Lectures on organization for fire action and the tactical application of fire, based on the instruction laid down in Chapter VI, can be illustrated on the Target with scenery and figures, and also to some extent on Landscapes. These lectures should include subjects such as allocation of frontages and objectives to fire-units, indication of the limits of sectors by description points, justification for opening fire, choice of targets, concentration and distribution of fire, mutual support, surprise, and use of rapid fire [see Sec. 74, para. 5 (iii)]. (ii) =Description and Recognition of Targets.=--This instruction should be carried out as described in Sec. 45 on the Target with scenery and figures, and on Landscapes. In training fire-unit commanders in the description of targets on the Solano Target the apparatus should be arranged beforehand, so that the instructor is able suddenly to expose targets representing bodies of troops at different distances in various parts of the field of fire (see Sec. 74, para. 4). =9. Fire Discipline.=--Men may be practised in the duties of fire discipline, including passing fire orders, concurrently with the training of fire-unit commanders as described in Sec. 47, paras. 8 to 11 inclusive. They may also be practised in working in pairs during exercises in fire discipline, and by individual field practices and observation practices. Section =73=.--Range Practices. =1. Arrangement of Target.=--The arrangement of the Target for grouping and application practices is shown in Fig. 53. This arrangement must be modified if the practice is an instructional one, fewer targets being used, as it may not be found possible to accommodate eight firers and eight instructors at the firing-point at the same time. In this case targets should be placed on Tier A only. The arrangement of the Target for observation practices is described in Appendix VII, para. 6, and shown in Fig. 57. =2. Grouping Practices.=--The dimensions of the rings to be used in measuring groups in grouping practices fired on miniature ranges are given in Sec. 49, para. 6 (xi). Instruction will be carried out on the principles laid down in Sec. 52, and Sec. 56. The conditions of practices are laid down in Tables A and B.