subsidiis
subsidiis is a Latin form of subsidium, meaning “help, aid; reserve troops, reinforcements”. It is the ablative plural neuter noun.
Found 76 times in the Latin texts on Socratos.
Where it is used
Caesar, De Bello Gallico 7.88.6: Fit protinus hac re audita ex castris Gallorum fuga. Quod nisi crebris subsidiis ac totius diei labore milites essent defessi, omnes hostium copiae deleri potuissent.
All forms of subsidium (declension table)
Source: Socratos (socratos.org), a free reader for Ancient Greek and Latin. Grammar from the Perseus Treebank and Morpheus; dictionary entries from Lewis & Short, A Latin Dictionary (Perseus Digital Library, CC BY-SA). Counts are from the texts on Socratos.