Final answer:
Switching from a draft to a volunteer army could lead to increased public support, higher recruitment costs, greater flexibility in selection, and potentially a smaller military.
Step-by-step explanation:
The transition from a military based on the draft to a volunteer army has several potential outcomes. Changes such as increased public support for military service could arise if the public views volunteering as a more patriotic or commendable action compared to being drafted. Meanwhile, there could be higher recruitment costs for the armed forces as they would need to invest in more sophisticated marketing and incentives to attract volunteers. Another possible change is greater flexibility in personnel selection, allowing the military to be more selective and recruit individuals with specific skills and attitudes that align with their needs. Lastly, a volunteer army could lead to a reduced size of the standing military, as a volunteer force might not match the numbers that can be reached through compulsory service.