Marines must request paternity leave within 25 days after the birth of the baby. If deployed, the commander can approve paternity leave within 90 days of deployment and can authorize it outside that time period for extraordinary circumstances.
An injury to a nail may result in the loss of the nail. As long as the nail bed itself wasn't damaged, a lost nail should eventually grow back. Healthy fingernails grow at a rate of about 0.10mm per day, but toenails are slower, growing at only about one half to one third of a fingernail's rate.
A broken fingernail can seem to take forever to grow out if you're an adult. Children and young teens are the ones who get a lucky break -- their nails heal and grow back much faster. In fact, many parents can attest to cutting a squirming child's nails almost every other day.