Leave is a Commander’s program. The Command cannot stop you from formally requesting leave. If you request leave and it is denied, ensure you keep the leave request form showing it was denied for your records.
The Command cannot make you take leave, but they can deny leave if it interferes with the unit mission. Usually requesting leave outside of block leave is not a problem so long as:
1. You have the leave available
2. It does not interfere with the mission
If you are getting push-back through your chain of command you can request to see the Commander and 1SG on open door policy to explain and make your request in person. Be sure that you are professional, calm, factual, and unemotional during your presentation.