Q:

Add Chapter Title to Header - without "Chapter 1"

I'm looking for the way (assuming there is one) of putting the current page's chapter title in the header of the page. Basically, what I want is:

where only the chapter's title ("First Chapter" in this case) shows up.
However, what I get is:

or some variant, but always with "Chapter 1" or just "Chapter" in there.
My code is:
 % AUTHOR: Enter the title, all letters in upper case
\def \booktitle{Trial Title}
\def \currentrevision{A}
\def \documentnumber{ME-MAN-001}

\title{\booktitle}

\pagestyle{fancy}
\fancyhf{}
\fancyhead[LE,RO]{\leftmark}

% \fancyhead[LE,RO]{FIRST CHAPTER}

\fancyhead[RE,LO]{\documentnumber~Rev.~\currentrevision}
\fancyfoot[LE,RO]{\thepage}

Yes, I am using fancyhdr and I've reviewed the documentation and tried the variants, but nothing seems to work. I've also tried too many things to detail here.

A:

You have to adjust \chaptermark to avoid inserting the \@chapapp \thechapter. prefix. It's truly as simple as adding
\renewcommand{\chaptermark}[1]{\markboth{\MakeUppercase{#1}}{}}

to your preamble. Here's a complete, minimal example:

\documentclass{book}
\usepackage{fancyhdr,lipsum}

\pagestyle{fancy}
\fancyhf{}
\fancyhead[LE,RO]{\leftmark}

\fancyhead[RE,LO]{\documentnumber~Rev.~\currentrevision}
\fancyfoot[LE,RO]{\thepage}

\renewcommand{\chaptermark}[1]{\markboth{\MakeUppercase{#1}}{}}

\def \currentrevision{A}
\def \documentnumber{ME-MAN-001}

\begin{document}

\chapter{First chapter}
\lipsum[1-50]

\end{document}

This is also fairly straight-forward using titleps:

\documentclass{book}
\usepackage{titleps,lipsum}
\newpagestyle{main}{
  \setheadrule{.4pt}% Header rule
  %\setfootrule{.4pt}% Footer rule
  \sethead[\documentnumber~Rev.~\currentrevision]% odd-left
          []% odd-center
          [\MakeUppercase{\chaptertitle}]% odd-right
          {\MakeUppercase{\chaptertitle}}% even-left
          {}% even-center
          {\documentnumber~Rev.~\currentrevision}% even-right
  \setfoot[]% odd-left
          []% odd-center
          [\thepage]% odd-right
          {\thepage}% even-left
          {}% even-center
          {}% even-right
}
\pagestyle{main}

\def \currentrevision{A}
\def \documentnumber{ME-MAN-001}

\begin{document}

\chapter{First chapter}
\lipsum[1-50]

\end{document}

If you're interested in switching from fancyhdr to titleps, see titleps for fancyhdr users.

