N.J. Stat. Ann. § 3B:14-13

When the fiduciary or person named to act as fiduciary in whose place a substituted fiduciary is appointed ceases to be engaged in war service, he may apply to the court to be reinstated as fiduciary or may be appointed to act as fiduciary if any part of the estate, trust or fund remains unadministered and if any of the duties of the office of fiduciary remain unexecuted, except the duty to account.