Before Accenture allocates you into a BASIS project, you may be under two pieces of training, you may need to clear either assessment and practical test post every individual training.
Yes, it will be a bit difficult for you, since you have a civil background, make up your mind to study hard and clear Accenture assessments.
PS- Take the assessments really well, if you really want to take IT as your career.
Accenture can train you in the way it wished you to be.
All the best!!