Gate Walker Series


The titles for the first trilogy were inspired by this quote:
You will die like a dog for no good reason.
—Ernest Hemingway

About the Gate Walker Series

The Gate Walker series reinvents the first contact genre. I write character driven, near future science fiction, with authentic military chain-of-command structures, that pays homage to mecha shows like Armored Trooper VOTOMS and of course Stargate.

My stories are driven by the Fermi paradox, asking how the military and scientific communities might work together to discover advanced alien science and engineering, while overcoming the logistical problems arising from exploring strange new worlds.

Bad Dog: Book 1

In 2071, Sergeant Tachikoma leads a Marine combat armor squad. She knows the Corps never promised her a rose garden, only the chance to fight for her country.

Now, she faces her greatest challenge, two terrifying alien pillars that trapped her into reliving the same day again. The day she dies.

Today, she needs every ounce of courage to save her people from annihilation.

Strike Dog: Book 2

After completing her officer training, Lieutenant Tachikoma faces a new challenge. Now she leads mankind's first mission to another world.

Her orders. Retrieve lost experimental robot scouts. Keep her team safe from the indigenous alien mega-fauna.

But when the mission becomes a first contact scenario, the stakes rise.

The Gate Walker universe series explores what happens when mankind starts to visit alien planets, in "Strike Dog" Tachikoma finds herself facing jeopardy and death using her combat armor, in this thrilling military SF roller-coaster ride.

Ghost Dog: Book 3

Newly promoted, Captain Tachikoma nows lead her team to another world. They have to go through a portal that only opens once every six months.

Her mission. Retrieve unimaginably advanced alien technology that could change the world. Keep her team alive with only one chance to return.

Nothing could prepare her for what waits on an alien planet.

This gripping addition to the Gate Walker series, humanity expands its exploration of the galaxy to reveal more secrets, in "Ghost Dog" Tachikoma needs all of her combat armor skills to get home.


“This story is great, with a very firm grasp of the Marine Corps lifestyle.”

– Sgt D. Barrow, USMC
High concept, high calibre character-driven Mil-SF. Compulsively readable.

– Alex Stewart aka Sandy Mitchell author of the Ciaphas Cain series



Hash Tags



  1. Hey Ashley, I was wondering if you had a primer post explaining the Gate Walkers universe and tech in a bit more detail. Something like a post or series of posts that detail the differences between our world and the scifi one in terms of politics/nations/tech/military organization. I've been watching season 2 of Obsolete and it got me thinking of your work as well.

  2. Season 2 of Obsolete... how did I miss that?

    To answer your question, no I haven't. Sounds like I should do something though. I'll give it some thought.

  3. Thanks. I figured I'd ask as I didn't know the differences between obviously real world nations and those in your universe let alone the unique fictional factions that exist only in them. Same with the military tech like the Bad Dogs for the various nations.

    As for Obsolete, I don't think they advertised it at all when it came out a year ago since the Youtube Originals premium format it was released initially under has pretty much been discontinued; fortunately, that means there isn't a paywall to watch anymore and all the episodes are free. I'm mainly watching for the various exoframe variants personally.

    1. I've started compiling resources to construct a 2070ish state of the world. Though I should add that India is along with China a major player, and Iran is still trying to become a local hegemonic power in the Middle-East; Their machinations are what caused the Holy sites getting nuked during WW3.

  4. Reading this book series as inspiration for my NaNoWriMo 2022 project... And I think I noticed an error in the Kindle version of Bad Dog... Isn't it supposed to by Knight with Tachikoma not McCarthy during the second loop?

    Either way I love the series so far. Sad it took me this long to get around to reading it.

    1. Gosh, I don't remember. Hey, I'm old, and I wrote this a while ago. I shall go check. Cheers.



I currently do not run an email list and have no plans to do so in the foreseeable future.

For those who subscribe to email updates for this blog, your personal data may be collected by the third party service. I have no control over the tool.

Blog posts or comments may include personal data such as the names of people who've made comments or similar. These posts are often shared on social media including my Twitter and FaceBook pages. The privacy policies of Twitter and Facebook will apply to information posted on their websites.

If you would like any personal data which is included in my blogposts or comments to be removed or have any questions, please email me through my contact widget.