please when is the best time to apply

Hi, this is totally dependant on your personal circumstances. Applying to join the army can take as little as 3mths or up to 12mths depending on medical or security checks and how fast an individual is engaging with the process. The army is always recruiting, however it's not 100% guaranteed that the role (job) you are after is available 100% of the time. My advice would be apply when you feel it's right to - you can always change your entry date (once you have passed all the selection criteria) until a time that's right for you.