Any engineering professional will tell you that there is no point in having machinery that will break-down, hence regular maintenance & a large supply of spare parts is essential to keep your machines in good working order. This costs money and manpower resources.
I counted 15 different kinds of APC’s. Even though Talha & Saad appear to be derived from M-113, there are still too many different varieties of APC & IFV’s in Pak Army's inventory. Their maintenance must be a nightmare for Elec. & Mech. Engineering battalions. . The stress should be on lean & lethal army and not tail heavy with a large maintenance contingent.
It is understood that no one vehicle can do all the tasks required in a large army; however I would have hoped that Pak Army planners would have streamlined their requirements and reduce the types to about half the current number. I am not suggesting reduction in absolute number; just concentrate on having more of the ones that are best for your needs.
Every competent engineering manager is trained to optimize material & manpower resources and avoid duplication & wastage. Does Pakistan’s Defence College runs a course on Organizational Ergonomics and Optimization?