The Wisconsin NMM Supplemental Information Sheet is an optional form that can be used to provide additional information to the Wisconsin Department of Revenue when filing a Wisconsin nonresident military member (NMM) state income tax return. The NMM Supplemental Information Sheet provides the NMM with the ability to itemize deductions, qualify for certain tax credits, and/or provide documentation of any income that is exempt from taxation. There are three types of Wisconsin NMM Supplemental Information Sheets: Form 1NPR-MIL, Form 1NPR-MIL-E, and Form 1NPR-MIL-X. Form 1NPR-MIL is used to itemize deductions that are not available on the Wisconsin Form 1-NR/BY. Form 1NPR-MIL-E is used to provide documentation of exempt military income. Form 1NPR-MIL-X is used to claim the Wisconsin Military Service Credit.