We have a couple of publications on stress and trauma exposure of navy personnel on the Comfort Hospital ship during deployment. Has some exposure measures - not specific to combat but may be useful to you: Refs. below:

Slusarcick, A. L., Ursano, R. J., Dinneen, M. P., Fullerton, C. S.:  Factors associated with depression on a hospital ship deployed during the Persian Gulf War.  Military Medicine, 166(3):248-52, 2001.

Slusarcick, A. L., Ursano, R. J., Fullerton, C. S., Dinneen, M. P.:  Stress and coping in male and female health care providers during the Persian Gulf War:  the USNS Comfort Hospital Ship.  Military Medicine, 164(3):166-173, 1999.

Dear Carol Fullerton. Unfortunately, I cannot get the two suggested publications from The Royal Library in Denmark. Would it be possible for you to upload the articles to your profile? Kind regards, Anni Nielsen

 Dear Anni, 

Here you have a lot of tools for assessment of complex PTSD

http://www.nctsn.org/content/standardized-measures-assess-complex-trauma

 This may also interest you: 

Journal of Family Psychotherapy

Volume 21, Issue 4, 2010

Vicarious Trauma: Proposed Factors That Impact Clinicians

by Karin Jordan

This article provides an overview about vicarious traumatization (VT) seen in military (and civilian) therapists working with combat veterans. Special focus is placed on the impact of VT on therapists on personal and professional levels. In addition, 8 important factors that impact the VT symptom severity are described: (a) the number of combat veterans and severity of combat trauma assigned/seen by the therapist; (b) personal history of trauma; (c) professional trauma, including deployment/redeployment in combat zones (in Afghanistan and Iraq) to provide therapy in combat zones; (d) the perception of adequate training for working with combat veterans with Type II trauma; (e) peer supervision and/or consultation; (f) availability of social support; (g) self-care and leisure; and (h) resiliency and stress buffers.

Dear Béatrice Marianne Ewalds-Kvist. Thank you for the suggested links. However, we are only looking for an instrument that can measure combat exposure among navy soldiers just like the well-known Combat Exposure Scale. Do you have any suggestions?

Kind regards, Anni

Complex PTSD is the result of combat exposure so you can use it as well or along with other scales.  E.g. Clinician-Administered PTSD

Scale (CAPS; Blake et al, 1995) as they used in this paper:

BRITI SH JOURNA L O F P SYCHIATRY BRI TI SH JOURN A L O F P SYCHI AT RY (20 05), 18 6, 4 67^472 (2005), 18 6, 4 67^472

 Documented combat exposure of US veterans

seeking treatment for combat-related seeking treatment for combat-related

post-traumatic stress disorder 

B. CHRISTOPHER FRUEH, JON D. ELHAI, ANOUK L. GRUBAUGH, B. CHRISTOPHER FRUEH, JON D. ELHAI, ANOUK L. GRUBAUGH, et al. 

You can also use scales for dissociative symptoms: Dissociative Experiences Scale (DES)  used in: 

Eur J Psychotraumatol. 2015 Apr 28;6:26657. 

Assessment of dissociation among combat-exposed soldiers with and without posttraumatic stress disorder.

Özdemir B1, Celik C2, Oznur T2.

I know it is possible to use Combat Exposure Scale, however, some of the questions does not fit the situations navy soldiers experience (ship). Therefore we try to figure out, whether someone else have used other questionnaire(s)

I advise you to contact Prof. Charles Figley .