Each and every branch has a way for scholarships and non-scholarships to commission. In NROTC non-scholarship midshipmen had to have an Advanced Standing or earn a scholarship in order to progress into the upper half of ROTC. In recent years advanced standing has been minimal allegedly down to about 50 slots for the entire nation! Many units had to kick out a lot of the non-scholarship midshipmen as they did not earn an advanced standing. In AFROTC (My branch) the majority of AFROTC cadets and commissionees are non-scholarship. Both non-scholarship and scholarship cadets have to compete for a slot to get into the upper half of ROTC. If you are a non-scholarship and fail to get a slot you may re-compete the following year but if you are a scholarship cadet and fail to get a slot you will be kicked out. In AROTC a scholarship cadet has been contracted thus guarantees them a commissioning slot as long as they follow the proper channels and don't screw up. An AROTC unit has a limited number of contracts they can give out and with scholarship cadets already having contracts they can only give out the remainder to the non-scholarship cadets. From what I see NROTC has the most percentage scholarship commissionees, AROTC has the second most, and AFROTC has the least. On the other hand, the same order goes in the amount of scholarships they would provide for non-scholarship cadets.