The Army chief met the defence minister hours after she assumed charge.
Sources said issues related to the security challenges the country was facing on the northern and western borders figured at the meeting between the two.
The Army chief had yesterday said the country should be prepared for a two-front war, noting that China had started "flexing its muscles" and there seemed no scope for any reconciliation with Pakistan.
A number of senior officials, including DRDO chief S Christopher and Defence Production Secretary A K Gupta, also briefed the defence minister on key issues.
Sitharaman also called on former president Pranab Mukherjee at his residence.
Mukherjee had held the defence portfolio from May, 2004 to October, 2006 in the UPA-I government.